1800054 has 12 divisors (see below), whose sum is σ = 3900156. Its totient is φ = 600012.

The previous prime is 1800047. The next prime is 1800067. The reversal of 1800054 is 4500081.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 100003 = 1800054 / (1 + 8 + 0 + 0 + 0 + 5 + 4).

1800054 is a modest number, since divided by 54 gives 18 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49984 + ... + 50019.

It is an arithmetic number, because the mean of its divisors is an integer number (325013).

2^1800054 is an apocalyptic number.

1800054 is an abundant number, since it is smaller than the sum of its proper divisors (2100102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1800054 is a wasteful number, since it uses less digits than its factorization.

1800054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100011 (or 100008 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1800054 is about 1341.6609109607. The cubic root of 1800054 is about 121.6452563397.

The spelling of 1800054 in words is "one million, eight hundred thousand, fifty-four".